Downloadable versions of XCOM: Enemy Unknown and The Bureau are available individually for $9.99 and $19.99, respectively.

If you prefer the classic stylings of the XCOM games from the '90s and early 2000s, you may want to check out the $3.75 XCOM Complete Pack, which collects XCOM: Apocalypse, XCOM: Enforcer, XCOM: Interceptor, XCOM: Terror from the Deep, and the 1993 debut entry XCOM: UFO Defense.

XCOM: Enemy Unknown Info

Description

Released in 1993, the original X-COM is widely regarded as one of the best games ever made and has now been re-imagined by the strategy experts at Firaxis Games. X-COM: Enemy Unknown will expand on that legacy with an entirely new invasion story, enemies and technologies to fight aliens and defend Earth. Players will control the fate of the human race through researching alien technologies, creating and managing a fully operational base, planning combat missions and controlling soldier movement in battle.